Extrinsic 36731-1

{
  "heartbeat": {
    "blockNumber": 36729,
    "sessionIndex": 612,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0x044ac8f3b5d0e4c9b90e32194252e3247918013226190a2b94f20d1a5ad32f5eca4ffae34cea8ebc336e568e0040cacff9a6dda353473ebf8b66295e4ac8858e"
}